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An acronym that stands for "Microsoft Paint Adventures," a website owned by Andrew Hussie. It is host to several comics, such as Homestuck.

Its first comic, Jailbreak, was started on a forum, long before the MSPA website existed.
It can be found on mspaintadventures.com
MSPA by Cthulhu Princess February 8, 2012
Related Words
mspaz Myspazz MSPaint myspaz MSPA mpaza mpazaxa mspace MSPaint Meme mspam

knucklehead mcspazatron 

a kid or an idiot;
a random name used to insult someone
Spongebob:"I might be a kid, or a goof ball, or a knucklehead mcspazatron."
knucklehead mcspazatron by fatboy November 22, 2004
The best computer graphic program ever created.
That boy has some mad MSPaint skills.
MSPaint by The Red Rocket January 1, 2006

Knucklehead McSpazatron 

Originating from the famous cartoon "Spongebob," this word means an immature and foolish individual.
"A goofball. A wingnut! A KNUCKLEHEAD MCSPAZATRON!"
Knucklehead McSpazatron by GlitchPix February 16, 2022

Knuckle-head McSpazatron 

A Knuckle-head McSpazatron is a very, very silly person. Is used as an insult.

First use was recorded in the SpongeBob SquarePants movie.
'You're a Knuckle-head McSpazatron!'
A reference to myspace.com when it's not working and keeps throwing errors at you... Which is most of the time.
Yeah, I'd love to watch the video you posted for me but Myspazz is being crappy as usual.